A pretreatment system using media derived from the recycled husks of coconuts (100% coir fiber) was evaluated using 20 permanently occupied single-family residences located in the State of Virginia. Sampling began in the summer of 2009 and continued to the summer of 2011. Home locations ranged from the mountainous regions of western Virginia to sandy low relief sites on the Eastern Shore of Virginia. Concentrations of biochemical oxygen demand, total suspended solids, and nitrogen species (TKN, nitrate + nitrite) were measured in system influent and effluent four times (once in each season) for each home. Total phosphorus was measured from each home’s influent and effluent once during the study. This paper provides information on the performance of this attached growth treatment system under real world conditions.
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